Tests of Adsorption of Amino-Acids on the Natural Phosphate of the El Hadba layer, Djebel Onk, Algeria - Archive ouverte HAL Access content directly
Journal Articles Chemical Engineering Transactions Year : 2012

Tests of Adsorption of Amino-Acids on the Natural Phosphate of the El Hadba layer, Djebel Onk, Algeria

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Nacer Bezzi
  • Function : Author
Tahar Aifa
  • Function : Author
  • PersonId : 840707
Samir Kennouche
  • Function : Author
Souaad Hamoudi
  • Function : Author
Djoudi Merabet
  • Function : Author

Abstract

Adsorption tests were carried out in static mode, on natural phosphate samples both in a raw state and after processing. Various techniques of analyses were used (i) to characterize the material adsorbing on the granulo-chemical and thermo-mineralogical levels, (ii) to evaluate the performances of the process of adsorption used in relation to the existing mineralogical species, in phosphatic and gangue elements, (iii) to evaluate incubation condition in ions PO43-, carboxylate grouping and steric obstruction effect on lateral chains of adsorbates. This effect is significantly affected by the composition of the incubation medium. Thus, the fractions low in phosphate ions appeared definitely more effective. The adsorption isotherms highlight a good correlation between experimental points and values predicted by Temkin model, confirming the influence of interactive effects on the used adsorbates. Study of the mechanisms of adsorption and the transfer mode of matter was carried out using the linear shape of the isotherm models, their respective correlation coefficients, the speed constants and the diffusion coefficients for the kinetic models based on reaction and diffusion.
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insu-00739529 , version 1 (08-10-2012)

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Nacer Bezzi, Tahar Aifa, Samir Kennouche, Souaad Hamoudi, Djoudi Merabet. Tests of Adsorption of Amino-Acids on the Natural Phosphate of the El Hadba layer, Djebel Onk, Algeria. Chemical Engineering Transactions, 2012, 29, pp.643-648. ⟨10.3303/CET1229108⟩. ⟨insu-00739529⟩
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